ATC Transponder

Question 1

Mode Selector - STBY

Answer 1

Both transponders electrically supplied, but not operating

Question 2

Mode Selector - AUTO

Answer 2

In flight, selected transponder operates

If on ground, selected transponder operates in S Mode

Question 3

Mode Selector - ON

Answer 3

Selected transponder operates

Question 4

1 2 Switch

Answer 4

Selects transponder to be used

Question 5

ALT RPTG - ON

Answer 5

Transponder sends barometric standard altitude data

Question 6

ALT RPTG - OFF

Answer 6

No attitude data is transmitted

ECAM displays ‘TCAS STBY’ message

Question 7

ATC Fail light - Amber

Answer 7

Selected transponder has failed

Question 8

IDENT pb - pushed

Answer 8

Sends aircraft ident displayed in code windon

Question 9

Traffic selector - THRT

Answer 9

Intruders displayed if
-TA or RA is present
+ - 2700’ of aicraft

Question 10

Traffic selector - ALL

Answer 10

Intruders displeased regardless of TA or RA

Question 11

Traffic selector - ABV

Answer 11

Same function as ALL, and in addition

Displayed +9900’ and -2700’

Question 12

Traffic selector - BLW

Answer 12

Same function as ALL, and in addition

Displayed -9900’ and +2700’

Question 13

Mode selector - STBY

Answer 13

TCAS is in standby

Question 14

Mode selector - TA

Answer 14

No vertical orders are generated, RA’s are converted to TA’s

• Used when aircraft performance is degraded
• TA only memo displayed in white on ND

Question 15

Mode selector - TA/RA

Answer 15

Normal operating position